flame throwers

I'm sure this topic has been discussed before but iam a newby to the forums, does any one know how to wire flamethrowers not useing propane or buying expensive modules.
I have the plugs welded in my dual exhaust, I just need to know where to run the wires from the coils to.

thats how i had it running but it kept burning out my coils, and i just put a petronix flame thrower coil on it and i dont really wanna melt it.
thanx anyways thou i was hopping there is another way to do it with out haveing tou use the ignition system.